Abstract
This work deals with the almost automorphic profile of solutions of the nonlinear Volterra difference equation \(u(n+1) = \lambda\sum_{j=-\infty}^{n}a(n-j)u(j) + f(n,u(n))\), n∈ℤ, for λ in a distinguished subset of the complex plane, where a(n) is a complex summable sequence and the perturbation f is a non-Lipschitz nonlinearity. Many illustrating remarks and examples are considered.
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Notes
The convex hull of a set K is the set of all convex combinations of point in K: co(K):={θ 1 x 1+⋯+θ k x k :x i ∈K, θ i ≥0, i=1,…,k; θ 1+⋯+θ k =1}. As the name suggests, the convex hull co(K) is always convex. It is the smallest convex set that contain K.
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Acknowledgements
The results in this work were partially obtained during a visit (July-September 2012) of the second author to the Department of Mathematics and Statistics of Universidad de La Frontera under Programa Atracción e Inserción (PAI-MEC) Grant 80112008 (CONICYT-CHILE). He is grateful to professor Herme Soto and the Department of Mathematics and Statistics, for its generous hospitality and providing a stimulating atmosphere to work.
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Agarwal, R.P., Cuevas, C. & Dantas, F. Almost automorphy profile of solutions for difference equations of Volterra type. J. Appl. Math. Comput. 42, 1–18 (2013). https://doi.org/10.1007/s12190-012-0615-3
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DOI: https://doi.org/10.1007/s12190-012-0615-3